Struct cosmwasm_std::QuerierWrapper

pub struct QuerierWrapper<'a, C: CustomQuery = Empty> { /* private fields */ }

Implementations

impl<'a, C: CustomQuery> QuerierWrapper<'a, C>

pub fn new(querier: &'a dyn Querier) -> Self

pub fn into_empty(self) -> QuerierWrapper<'a, Empty>

This allows to convert any QuerierWrapper into a QuerierWrapper generic over Empty custom query type.

pub fn query<U: DeserializeOwned>( &self, request: &QueryRequest<C> ) -> StdResult<U>

Makes the query and parses the response.

Any error (System Error, Error or called contract, or Parse Error) are flattened into one level. Only use this if you don’t need to check the SystemError eg. If you don’t differentiate between contract missing and contract returned error

pub fn query_supply(&self, denom: impl Into<String>) -> StdResult<Coin>

pub fn query_balance( &self, address: impl Into<String>, denom: impl Into<String> ) -> StdResult<Coin>

pub fn query_all_balances( &self, address: impl Into<String> ) -> StdResult<Vec<Coin>>

pub fn query_delegator_withdraw_address( &self, delegator: impl Into<String> ) -> StdResult<Addr>

pub fn query_denom_metadata( &self, denom: impl Into<String> ) -> StdResult<DenomMetadata>

pub fn query_all_denom_metadata( &self, pagination: PageRequest ) -> StdResult<AllDenomMetadataResponse>

pub fn query_delegation_rewards( &self, delegator: impl Into<String>, validator: impl Into<String> ) -> StdResult<Vec<DecCoin>>

pub fn query_delegation_total_rewards( &self, delegator: impl Into<String> ) -> StdResult<DelegationTotalRewardsResponse>

pub fn query_delegator_validators( &self, delegator: impl Into<String> ) -> StdResult<Vec<String>>

pub fn query_wasm_smart<T: DeserializeOwned>( &self, contract_addr: impl Into<String>, msg: &impl Serialize ) -> StdResult<T>

Queries another wasm contract. You should know a priori the proper types for T and U (response and request) based on the contract API

pub fn query_wasm_raw( &self, contract_addr: impl Into<String>, key: impl Into<Binary> ) -> StdResult<Option<Vec<u8>>>

Queries the raw storage from another wasm contract.

You must know the exact layout and are implementation dependent (not tied to an interface like query_wasm_smart). That said, if you are building a few contracts together, this is a much cheaper approach

Similar return value to Storage::get. Returns Some(val) or None if the data is there. It only returns error on some runtime issue, not on any data cases.

pub fn query_wasm_contract_info( &self, contract_addr: impl Into<String> ) -> StdResult<ContractInfoResponse>

Given a contract address, query information about that contract.

pub fn query_wasm_code_info(&self, code_id: u64) -> StdResult<CodeInfoResponse>

Given a code ID, query information about that code.

pub fn query_all_validators(&self) -> StdResult<Vec<Validator>>

pub fn query_validator( &self, address: impl Into<String> ) -> StdResult<Option<Validator>>

pub fn query_bonded_denom(&self) -> StdResult<String>

pub fn query_all_delegations( &self, delegator: impl Into<String> ) -> StdResult<Vec<Delegation>>

pub fn query_delegation( &self, delegator: impl Into<String>, validator: impl Into<String> ) -> StdResult<Option<FullDelegation>>

Trait Implementations

impl<'a, C: Clone + CustomQuery> Clone for QuerierWrapper<'a, C>

fn clone(&self) -> QuerierWrapper<'a, C>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a, C: CustomQuery> Deref for QuerierWrapper<'a, C>

This allows us to use self.raw_query to access the querier. It also allows external callers to access the querier easily.

type Target = dyn Querier + 'a

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<'a, C: CustomQuery> Copy for QuerierWrapper<'a, C>